This mat was in the Shelburne Show this year and is hooked in traditional GRENFELL Style and Technique 
Well done Rachel Jacobs!
You can see by the colourful mountains that  panty hose can easily be dyed and it is great fun . . .I dyed mine in an electric fry pan . . .for how to hook with nylon panty hose  just google or look in my list of blogs at the bottom of this page  . . .for "Hooking with Nylons"